BQ29209-Q1 Automotive Voltage Protection with Automatic Cell Balance For 2-Cell Li-Ion Batteries, OVP=4.30V | TI.com

BQ29209-Q1 (ACTIVE)

Automotive Voltage Protection with Automatic Cell Balance For 2-Cell Li-Ion Batteries, OVP=4.30V

Automotive Voltage Protection with Automatic Cell Balance For 2-Cell Li-Ion Batteries, OVP=4.30V - BQ29209-Q1
 

Description

The bq29209-Q1 device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.

The voltage of each cell in a 2-series cell battery pack is compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.

The bq29209-Q1 can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by the CB_EN pin.

Features

  • 2-Series Cell Secondary Protection
  • Automatic Cell Imbalance Correction with External
    Enable Control
    • ±30-mV Enable, 0-mV Disable Thresholds
      Typical
  • External Capacitor-Controlled Delay Timer
  • External Resistor-Controlled Cell Balance Current
  • Low Power Consumption ICC < 3 µA Typical
    (VCELL(ALL) < VPROTECT)
  • Internal Cell Balancing Handles Current
    up to 15 mA
  • External Cell Balancing Mode Supported
  • High-Accuracy Overvoltage Protection:
    • ±25 mV with TA = 0°C to 60°C
  • Fixed Overvoltage Protection Threshold:
    4.30 V
  • Small 8L DRB Package
  • Automotive-Qualified AEC Q100 Grade Two

View more

Parametrics Compare all products in Battery Monitor, Protection & Authentication Solutions

 
Function
Number of Series Cells (Min)
Number of Series Cells (Max)
Communication Interface
Features
Typical Operating Current (Typ) (uA)
Rating
Vin (Max) (V)
Pin/Package
BQ29209-Q1 BQ29200 BQ29209
Protection     Protection     Protection    
2     2     2    
2     2     2    
No Communication     No Communication     No Communication    
Cell Balancing
Over-voltage (OV)    
Cell Balancing
Over-voltage (OV)    
Cell Balancing
Over-voltage (OV)    
3     3     3    
Automotive     Catalog     Catalog    
16     10     10    
8SON     8SON     8SON    

Other qualified versions of BQ29209-Q1

Version Part Number Definition
Catalog BQ29209 TI's standard catalog product